Towne will be a consulting producer for the show. He won the Original Screenplay Oscar for Roman Polanski’s “Chinatown” in 1974, and has been nominated for an additional three screenwriting Oscars — 1973’s “The Last Detail,” 1975’s “Shampoo” and 1984’s “Greystroke: Legend of Tarzan, Lord of the Apes.”

Patricia Resnick (“Nine to Five”) and David Iverson (“Saturday Night Live”) have also signed as consulting producers for the next season of “Mad Men.”

Meanwhile, Matthew Weiner’s big-screen directorial debut, “You Are Here,” didn’t land so well with critics following its premiere at TIFF last week.